Plow



Patented Oct. 14, 1930 UNITED STATES PATENT OFFICE.

MILFORD S. GLOVER AND ANDREW M. BENSON, OF THORNTON, AND LESTER W. SHE? PERD, OF GROESIBECK, TEXAS PLOW Application filed December 20, 1928. Serial No. 327,362.

This invention relates to plows, and more particularly to a plow having an adjustable share.

7 An important object of the invention is to provide a plow construction wherein the share is adjustable upon the beam through a lever within convenient reach of the operator and in which the construction is such that forces generated by engagement of the plow with an obstruction are not thrown against the lever but against the plow beam.

A further object of the invention is the provision in a device of this character of a plow mounting such that the plow is lifted as it is tilted to a more nearly vertical position with the result that the point of the plow will have a substantially constant depth without regard to its adjusted position.

A still further object of the invention is to produce a construction of this character,

wherein the various parts are readily accessible to permit adjustment and the range of adjustment is materially increased over such devices as ordinarily constructed.

These and other objects we attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of our invention and wherein Figure 1 is a side elevation of a plow constructed in accordance with our invention Figure 2 is an enlarged vertical sectional view showing the plow mounting;

Figure 3 is a section on the line 3-3 of Figure 2;

Figure 4 is a section on the line H of Figure 1.

Referring now more particularly to the drawings, the numeral 10 designates a plow beam having the usual clevis at its forward end and having at its rear end a downwardly and rearwardly curved portion 11, which terminates in a forward and downwardly extensio 12 to which the usual horizontal guide bar 13 is secured. To this extension, adjacent its lower end, is connected a link 14. the rear end of which is preferably forked, as indicated at 15, to straddle the extension and is pivoted to the extension, as indicated at 16. The numeral 17 generally designates a plow foot to which the share 18 is secured. This foot is preferably constructed by bending a bar intermediate its ends to form parallel arms 19 between which the securing elements of the plow, designated at 20, may be directed, The foot has extensions of the arms19, which project upwardly and rearwardly therefrom and at their upper ends, pass upon opposite sides of the curved portion 11 of the beam. The forward end of the link 1a is inserted between these extensions adjacent the lower ends thereof and is pivotally connected thereto, as at 21. Between the extensions at oppo site sides of the curved portion 11 of the beam are arranged rollers 22.

Secured to the upper end of the extension 12 of this curved portion is a segment 23 having pivoted thereto a lever 24 having the usual latch mechanism 25 for coaction with the notches of the segment. This lever is connected by a link 26 with the upper end of the extensions of the curved portion 11.

It will be obvious that by adjustment of the lever, the extensions of the foot will be caused to move longitudinally of this curved portion and that in so doing, the rollers will act as guides and supports for the extension and foot. As the extensions move upwardly and forwardly upon the curved portion, they will be bodily elevated, with the result that the pivotal connection 21 of the link with the extensions will likewise be elevated. Curvature of the portion 11 is such that in any position of the pivot 21, rotation of the extensions about this pivot in a direction moving the upper end of the etxensions forwardly will cause the upper roller 22-to comefirmly into contact with the upper or outer face of this curved portion.

Any rearward movement of the upper ends of the extensions will cause the lower roller 22 to come into contact with lower or inner face of this curved portion. The curvature of the section 11 is not in the form of a true are but in the form of a cam and the inner and outer faces thereof are differently curved, so that both rollers 22 are in contact with their associated faces at any position of the extension and at no time in the movement of these extensions is the movement about thepivot 21 similar to amovement about a fixed pivot.

In other words, in each and every movement signatures.

jwardl'y', with the result that the movement of the point of the plow is substantially in a t aig t horizontal li r In testimony whereof we hereunto afiix our MILFORD s. eLovER,

ANDREW M. HEN SON. LESTER W. SHEPPERD.

The beam is provided with thcrusualhandles 27 which are braced, as indicated at 28.

The connections of the'handles preferably" permit pivotal movement thereof and the connections of the braces to the handles per-'- mit adjustment of the connectionlongitudi- I nally ofthebraces, asindicatedfatl29, so that these handles may be elevated orfdepressed' to enable convenientfuse of the plow by persons of difl er ent height. The link26is pref erably adjustable as to effective length, as indicated at 30.

Since the 7 construction hereinbefore set forth is capable of a certain range of: change and modification without'materially departing from the spirit of the invention, We do not limit. ourselves to such specific structure except as hereinafter claimed.

Wercl'aim:+ V I r j o '1'. In a plow, a beam having aidownwardly and rearwardly curved portion at its rear end, the lower end ofsa'id portion having an extension for the attachment of the usual guide bar, a link pivoted to saidextension and extending forwardly therefrom, a plow foot pivoted to the forward end of the link and having arms straddling the curved portion of the beam, roller members d isposedbetween said arms and engaging opposite faces ofthe beam at the curved portion thereof, a sege. ment carried by the beam, a lever pivoted to the segment, and a link connectingsaid lever and the upper ends of'saidf arm's whereby the arms may bev adjusted longitudinally of said curved portion.

2. In a plow, a beam having'adownwardly and rearwardly curve-'dportionat itsrear end, the lower end of said portion having an extension for the attachment of the; usual guide bar, a link pivoted to the curvedpon tion of the beam and extending forwardly therefrom, a plow foot pivoted to the 'forward. end ofthe link'and havingarms straddling the curved portion of the beam, roller members disposed between said arms and engaging opposite faces of the beam at the curved portion thereoflasegment carried by the beam a lever pivoted to" the segment, and a link connecting said lever andithe upper ends ofsaid armsfwhereby the arms may be adjusted longitudinally of said; curved por: ion, said. curved po t on, b ing varied in; width to maintain engagement. thereof With he memb r during l ovement ef the arms,

lf ng itud lial ytlli; 

